Triassic

Pronunciation

• Rhymes: -æsɪk

Origin

1841, coined by geologist Friedrich August von Alberti (1795–1878). From Trias ("three-layered geologic strata between the Permian and Jurassic") < German Trias < Ancient Greek τριάς (triás, "triad") + -ic.

Full definition of Triassic

Adjective

1. Of or from the geologic strata above the Permian and below the Jurassic; of or belonging to the period 250 to 200 million years ago when these strata were laid down.
• 1990, Michael Crichton, Jurassic Park, Alfred A. Knopf, p 45:“Well,” Ellie said. “We know animals have survived. Crocodiles are basically Triassic animals living in the present. Sharks are Triassic. So we know it has happened before.”

Proper noun

1. (geology) A geologic period within the Mesozoic era; comprises lower, middle and upper epochs from about 250 to 200 million years ago.

Related terms

• Trias